Driving mechanism for washing-machines



H. HANSEN.

DRIVING MECHANISM FOR WASHING MACHINES.

APPLICATION FILED APR. I8; I92]- 9 alga Patented Dec. 20, 1921.

INVENTOR flm Ha lLL M/ I i I ATTORNEY BY M'Mm G HANS HANSEN, OF KANSAS CITY, MISSOURI.

insures.

Application filed April 18,

To all whom 2'1; may concern:

Be it known that 1, Plans HANsnN, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Driving Mechanisms for lVashing-liclachines, of which the following is a description, referring to the accompanying drawings.

The invention particularly refers to washing machines of the dasher type driven by a rack bar and relates to an improved coordination of elements as employed in the assemblage. These improvements will be more fully explained in the following description of the drawings.

In the drawings, Figure 1 represents a top view of a washing machine showing the pre ferred power installation in combination with the driving mechanism. Fig. 2 shows a vertical section taken through the portions of the transmission case and tub as disclosed in Fig. 1. Fig. 3 represents a-sectional view of the rack bar and dasher gear and elements in combination as disclosed along the line 3-3, F 1. Fig. 4 is a bottom view of the bottom housing for the dasher shaft gear seen in Fig. 3. Fig. 5 is a top View of the bottom housing seen in Fig. 4. Fig. 6 is a top view of the top housing seen in Fig. 3 including a top View of the dasher shaft gear and a cut section of the dasher shaft. Fig. 7 is a bottom view of the housing seen in Fig. 6. 8 is a bottom view of the hub crank seen in Fig. 2. Fig. 9 is a top view of the lever for shifting the hub crank seen in Fig. 2. Fig. 10 is a side view showing the catch employed in combination with the shifting lever, Figs. 1 and 2. Similar numerals of reference indicate corresponding parts throughout all the figures of the drawings.

Referring to the drawings, 10 represents the tub of the washing machine 11 is the cover thereof. 12 the hinged door. -Mounted on the cover 11 is seen the motor 13 and motor shaft 18. On the shaft 13 within the transmission case 14 is a worm (not shown) which meshes with the worm gear 15 rigid with the vertical shaft 16 mounted in bearings such as 17 within the case 14. Through the lower portion of the shaft 16 is passed a pin 18. The hub crank 1.9 has a hub portion loosely sleeved on the vertical shaft 16 intermediate the bearing 1? and pin 18,

Specification of Letters Patent.

Patented hes. so, rear.

1921. Serial No. 462,288.

while the outer end of the crank 19 projects downwardly as a pin 21. The barrel of the hub 20 is horizontall grooved as at 22 to receive the lugs 23, 23 of the forked lever 24 pivotally mounted as at 25 on a portion rigid with the case 14. The pivoted hoolr 26 mounted as at 27 to the side of the case 14, engages the lever 24 in Fig. 2 to hold the hub crank 19 up on the drive shaft 16 away from the pin 18. A rack bar 28 has its in ner' end 29, including a ball bearing 30, en-

gaged with the pin 21; a washer 31 and a cotter pin 82 through the pin 21 completes the connection.

The dasher 33 of the washing machine is suspended and carried by the square vertical shaft 84. slidably housed through the square hole 35 in the gear 36. The gear 36 has two hubs 37, 38 respectively mounted in the ball bearings 89, 40 arranged within bottom and top gear housing members 41, 42. The bottom housing 41 is irovided with the pocket 43 to receive the bearing 39 and a central opening 48 is left to pass the lower portion of the hub 37 as disclosed. The door 12 is recessed at 44 to receive the pocket projection 43 of the housing 41.

The rack bar 28 engages with the teeth 45 of the gear wheel 36 and rests or moves upon the boss 46 provided on the upper surface of the housing 41. A flange 47 arranged on the housing 41 as an are on the side opposite the boss 46, supports the top housing 42 and the housings 41 and 42 as assembled are bolted to the cover 1221s at 47. This housing 42 is recessed at 42 to receive the ball bearing 40 and provided with the central opening 48 to pass the hill 38 as disclosed. At the upper end of the dasher shaft 34 is seen a head 49, by means of which the dasher can be raised to the dotted position seen in. Fig. 2 when desired. A spring 50 beneath the head 49 is arranged on the shaft '34 to cushion the fall of the dasher parts from the dotted position shown.

An arm portion 51 projects outwardly from the top housing 42 to furnish a beari'n 52 for the vertical shaft 53 loosely mounted therein and provided with the head 54 supported upon the bearing 52. The base of the shaft 58 is decreased in diameter at 55 and upon this portion as a bearing, the wheel 56 is rotatably mounted and held in position by the washer 57 and cotter pin 58 through the shaft 53 as disclosed.

bearing support as a rest for tio'n oi said rack bar; clutch mechanism arranged as disclosed in Figs 1, 2 and 3, to operate the washing machine, the motor is started thus rotating the shaft 16. The llGGl so is removed from engagement with the lever 24:, whereupon the hub crank 19 drops by gravity on the shaft 16 until a pair oi notches 59 in the base 01 the hub 20 engage the pin 18, ti on the hub crank 19 will revolve with the shaft 16 and draw the rack 28 back and forth upon the boss 46 to oscillate the gear wheel. 36 and thus the dasher shaft Set. A slotted opening i lis provided through the case 14c to pass the rack bar 28 in its travel. The wheel 56 rotates through frictf n with the rack bar and serves to sen the rack bar in operative eug w l; the wheel Lit will he noted t y "y i O down on the lever 24,

The parts being M p j pres the hub 20 will be raised to disengage from the pin 18 and the hook 26 spring actuated at 26* will engage the lever 24: to maintain this disengagement. A slot 24* through the case 1% passes the handie of lever 24. The rack bar during this disengagement and as shown in Fig. 2 is slightly tilted on the boss l6 being brought to the horizontal working position when in driving engagement with. the pin 18% ihcn p g nachine operations are completed, the need is r the wheel 56 to the dotted position 56*, the rack bar 28 is then swung clear or the door 12 to the dotted position 28*, Fig. 1; the door 12 can then he open d to remove the Washing.

The advantages and simplicity of operation 01 the elements ot the invention are apparent and modifications in keeping with the scope of the appended claims may be ployed. 1

Having fully described my invention, what I new claim as new desire to secure by Letters Patent is:

1. A. driving mechanism for washing his chines including a transmission case, a powr' driven vertical shaft mounted in bearings thereiina pin through the base 0' said shaft, a crank havino a hub loosely sleeved upon said shaft ab ove pin; rack bar pivotsily connecting at its inner end to the outer element of said crank, a

the outer porembodied with said crank, a lever pivoted to said case engaging said clutch mechanism, a hook on said case engageable with said lever to effect a tilting of the rack bar on said rest when said lever acts to raise said crank on said shaft for clutch disengagement.

2. In a washing machine, a door, a bottom housing supported by said door, a top gear housing supported above said bottom housing, a gear mounted in bearings and arranged intermediate said bottom and top housings, a square dasher shaft slidably mounted through said door and through a square hole through the vertical axis of said gear, a head on said dasher shaft above said gear and a spring intermediate said head and gear; a projection outwardly extending from said top housing member, a bearing therein, a vertical shaft slidably mounted in said bearing, a head on said shaft above said bearing, a wheel rotatably mounted and carried by said shaft, a rack bar intermediate said wheel and gear and sli'dably supported upon a boss on said base housing.

3. in a washing machine; a door, a bottom gear housing supported by said door, a top gear housing supported above said bottom housing, a gear mounted in bearings and ranged intermediate said bottom and top housings, a square dasher shaft slidably mounted through said doorand through a square hole through the vertical axis of said gear, a head on said shaft above said gear and a spring beneath said head; a projection from said top member, bearing therein, a vertical shaft in said bearing, a head on said shaft above the bearing, a wheel rotatably mounted on the shaft below thebearing; rack bar engaging with said gear and supported by a boss on the lower housing member, said wheel preserving engagement of said rack bar with said gear member; a crank pivotally engaging said rack bar, a vertical drive shaft housed within the hub ot-said crank, a case including bearings for said drive shaft, a lever sup-' ported by said case and engaging said crank, pivoted movement of said lever on said ease to raise said crank said shaft operating'to tilt the rack bar on said. boss to a stationary position and clutch mecha nisms operable under pivoted. movement-s downwardly of said lever to engage said shalt and crank bring the rack bar to a horizontal position and permit movement oi said rack bar on said boss during drive shaft rotation to oscillate said gear and dasher shaft substantially as specified.

HANS HANSEN.

Witnesses:

WILLIAM C. EDWARDS, J12, FRANK A. BECKER. 

